See this at: portlandonline.com| Added on 03/04/07

A. Structural materials. Structural members and connectors within 18 inches of the water shall be fabricated of materials or be coated or treated such that the materials will resist deterioration due to their proximity to the water except logs used... See more

A. Structural materials. Structural members and connectors within 18 inches of the water shall be fabricated of materials or be coated or treated such that the materials will resist deterioration due to their proximity to the water except logs used for flotation and steel piling. In general: framing lumber shall be pressure treated with an approved preservative; framing connectors shall be hot-dipped galvanized or noncorrosive metal except for anchoring chain and pins; plywood shall have exterior type adhesive; exposed plywood shall be exterior grade. B. Thermal insulation. Main floor insulation shall be of a type approved for damp locations. C. Underfloor ventilation. All enclosed floating home, combo, or boathouse wood construction systems, shall be ventilated in accordance with the building code. 28.06.030 Conventional Construction Methods and Materials for Floating Homes and Walkways Using Log Support Systems. A. Floating homes. The following methods and materials are approved... See less